"In this case you don't shoot bullets or lasers, you shoot plungers at rabbits, so it has very similar dynamics, mechanics and it turns out it has very similar effects on visual attention. But wouldn't be considered a violent game. There is kind of host of games that are coming up in that sphere," he said.

He also says new research shows other gaming forms can do the trick

"Real-time strategy games often aren't as violent. There's some new research suggesting that these have some of the same effect as action games have."

Down the line, Professor Green plans to use MRIs, to see if people's cognition improves when they play those video games.